Popular super nerd VSauce has returned to the web for his much anticipated weekly science lesson. For his latest video, he asks the very intriguing question, “Why Do We Have Two Nostrils?“
Having two ears and two eyes serves very real purposes–mainly echo location and depth perception. But is there a scientific reason for why we, and so many other animals, have two nostrils?
Why not one big nostril, just like we have one mouth?